you have the upper blue just outside of kremmling IV- at this level. really just big waves, and a few good holes too. Depending on your playboating skill the upper blue had quiter a bit of on the fly hole surfing and a few glassy waves.
lower blue is 30 min down the road, and a full grade easyer than the upper, so i'd do upper.
Also, the KSLP run might be in v- right at keysotne ski area, and the top section above dillion might have water, and snow too, this early, but worth a look.
upper clear creek is the next closest that comes to mind